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/*************************************************************************
*
* OpenOffice.org - a multi-platform office productivity suite
*
* $RCSfile: gridprimitive2d.cxx,v $
*
* $Revision: 1.6 $
*
* last change: $Author: aw $ $Date: 2007-11-19 10:21:42 $
*
* The Contents of this file are made available subject to
* the terms of GNU Lesser General Public License Version 2.1.
*
*
* GNU Lesser General Public License Version 2.1
* =============================================
* Copyright 2005 by Sun Microsystems, Inc.
* 901 San Antonio Road, Palo Alto, CA 94303, USA
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License version 2.1, as published by the Free Software Foundation.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
* MA 02111-1307 USA
*
************************************************************************/
#ifndef INCLUDED_DRAWINGLAYER_PRIMITIVE2D_GRIDPRIMITIVE2D_HXX
#include <drawinglayer/primitive2d/gridprimitive2d.hxx>
#endif
#ifndef _BGFX_TOOLS_CANVASTOOLS_HXX
#include <basegfx/tools/canvastools.hxx>
#endif
#ifndef INCLUDED_DRAWINGLAYER_PRIMITIVE2D_POINTRARRAYPRIMITIVE2D_HXX
#include <drawinglayer/primitive2d/pointarrayprimitive2d.hxx>
#endif
#ifndef INCLUDED_DRAWINGLAYER_PRIMITIVE2D_MARKERARRAYPRIMITIVE2D_HXX
#include <drawinglayer/primitive2d/markerarrayprimitive2d.hxx>
#endif
#ifndef INCLUDED_DRAWINGLAYER_GEOMETRY_VIEWINFORMATION2D_HXX
#include <drawinglayer/geometry/viewinformation2d.hxx>
#endif
#ifndef INCLUDED_DRAWINGLAYER_PRIMITIVE2D_PRIMITIVETYPES2D_HXX
#include <drawinglayer/primitive2d/drawinglayer_primitivetypes2d.hxx>
#endif
//////////////////////////////////////////////////////////////////////////////
using namespace com::sun::star;
//////////////////////////////////////////////////////////////////////////////
namespace drawinglayer
{
namespace primitive2d
{
Primitive2DSequence GridPrimitive2D::createLocalDecomposition(const geometry::ViewInformation2D& rViewInformation) const
{
Primitive2DSequence aRetval;
if(!rViewInformation.getViewport().isEmpty() && getWidth() > 0.0 && getHeight() > 0.0)
{
// decompose grid matrix to get logic size
basegfx::B2DVector aScale, aTranslate;
double fRotate, fShearX;
getTransform().decompose(aScale, aTranslate, fRotate, fShearX);
// create grid matrix which transforms from scaled logic to view
basegfx::B2DHomMatrix aRST;
aRST.shearX(fShearX);
aRST.rotate(fRotate);
aRST.translate(aTranslate.getX(), aTranslate.getY());
aRST *= rViewInformation.getViewTransformation();
// get step widths
double fStepX(getWidth());
double fStepY(getHeight());
const double fMinimalStep(10.0);
// guarantee a step width of 100.0
if(basegfx::fTools::less(fStepX, fMinimalStep))
{
fStepX = fMinimalStep;
}
if(basegfx::fTools::less(fStepY, fMinimalStep))
{
fStepY = fMinimalStep;
}
// get relative distances in view
double fViewStepX((rViewInformation.getViewTransformation() * basegfx::B2DVector(fStepX, 0.0)).getLength());
double fViewStepY((rViewInformation.getViewTransformation() * basegfx::B2DVector(0.0, fStepY)).getLength());
double fSmallStepX(1.0), fViewSmallStepX(1.0), fSmallStepY(1.0), fViewSmallStepY(1.0);
sal_uInt32 nSmallStepsX(0L), nSmallStepsY(0L);
// setup subdivisions
if(getSubdivisionsX())
{
fSmallStepX = fStepX / getSubdivisionsX();
fViewSmallStepX = fViewStepX / getSubdivisionsX();
}
if(getSubdivisionsY())
{
fSmallStepY = fStepY / getSubdivisionsY();
fViewSmallStepY = fViewStepY / getSubdivisionsY();
}
// correct step width
while(fViewStepX < getSmallestViewDistance())
{
fViewStepX *= 2.0;
fStepX *= 2.0;
}
while(fViewStepY < getSmallestViewDistance())
{
fViewStepY *= 2.0;
fStepY *= 2.0;
}
// correct small step width
if(getSubdivisionsX())
{
while(fViewSmallStepX < getSmallestSubdivisionViewDistance())
{
fViewSmallStepX *= 2.0;
fSmallStepX *= 2.0;
}
nSmallStepsX = (sal_uInt32)(fStepX / fSmallStepX);
}
if(getSubdivisionsY())
{
while(fViewSmallStepY < getSmallestSubdivisionViewDistance())
{
fViewSmallStepY *= 2.0;
fSmallStepY *= 2.0;
}
nSmallStepsY = (sal_uInt32)(fStepY / fSmallStepY);
}
// prepare point vectors for point and cross markers
std::vector< basegfx::B2DPoint > aPositionsPoint;
std::vector< basegfx::B2DPoint > aPositionsCross;
for(double fX(0.0); fX < aScale.getX(); fX += fStepX)
{
const bool bXZero(basegfx::fTools::equalZero(fX));
for(double fY(0.0); fY < aScale.getY(); fY += fStepY)
{
const bool bYZero(basegfx::fTools::equalZero(fY));
basegfx::B2DPoint aViewPos(aRST * basegfx::B2DPoint(fX, fY));
if(rViewInformation.getDiscreteViewport().isInside(aViewPos) && !bXZero && !bYZero)
{
const basegfx::B2DPoint aLogicPos(rViewInformation.getInverseViewTransformation() * aViewPos);
aPositionsCross.push_back(aLogicPos);
}
if(getSubdivisionsX() && !bYZero)
{
double fF(fX + fSmallStepX);
for(sal_uInt32 a(0L); a < nSmallStepsX && fF < aScale.getX(); a++, fF += fSmallStepX)
{
aViewPos = aRST * basegfx::B2DPoint(fF, fY);
if(rViewInformation.getDiscreteViewport().isInside(aViewPos))
{
const basegfx::B2DPoint aLogicPos(rViewInformation.getInverseViewTransformation() * aViewPos);
aPositionsPoint.push_back(aLogicPos);
}
}
}
if(getSubdivisionsY() && !bXZero)
{
double fF(fY + fSmallStepY);
for(sal_uInt32 a(0L); a < nSmallStepsY && fF < aScale.getY(); a++, fF += fSmallStepY)
{
aViewPos = aRST * basegfx::B2DPoint(fX, fF);
if(rViewInformation.getDiscreteViewport().isInside(aViewPos))
{
const basegfx::B2DPoint aLogicPos(rViewInformation.getInverseViewTransformation() * aViewPos);
aPositionsPoint.push_back(aLogicPos);
}
}
}
}
}
// prepare return value
const sal_uInt32 nCountPoint(aPositionsPoint.size());
const sal_uInt32 nCountCross(aPositionsCross.size());
const sal_uInt32 nRetvalCount((nCountPoint ? 1 : 0) + (nCountCross ? 1 : 0));
sal_uInt32 nInsertCounter(0);
aRetval.realloc(nRetvalCount);
// add PointArrayPrimitive2D if point markers were added
if(nCountPoint)
{
aRetval[nInsertCounter++] = Primitive2DReference(new PointArrayPrimitive2D(aPositionsPoint, getBColor()));
}
// add MarkerArrayPrimitive2D if cross markers were added
if(nCountCross)
{
aRetval[nInsertCounter++] = Primitive2DReference(new MarkerArrayPrimitive2D(aPositionsCross, MARKERSTYLE2D_CROSS, getBColor()));
}
}
return aRetval;
}
GridPrimitive2D::GridPrimitive2D(
const basegfx::B2DHomMatrix& rTransform,
double fWidth,
double fHeight,
double fSmallestViewDistance,
double fSmallestSubdivisionViewDistance,
sal_uInt32 nSubdivisionsX,
sal_uInt32 nSubdivisionsY,
const basegfx::BColor& rBColor)
: BasePrimitive2D(),
maTransform(rTransform),
mfWidth(fWidth),
mfHeight(fHeight),
mfSmallestViewDistance(fSmallestViewDistance),
mfSmallestSubdivisionViewDistance(fSmallestSubdivisionViewDistance),
mnSubdivisionsX(nSubdivisionsX),
mnSubdivisionsY(nSubdivisionsY),
maBColor(rBColor),
maLastViewTransformation(),
maLastViewport()
{
}
bool GridPrimitive2D::operator==(const BasePrimitive2D& rPrimitive) const
{
if(BasePrimitive2D::operator==(rPrimitive))
{
const GridPrimitive2D& rCompare = (GridPrimitive2D&)rPrimitive;
return (getTransform() == rCompare.getTransform()
&& getWidth() == rCompare.getWidth()
&& getHeight() == rCompare.getHeight()
&& getSmallestViewDistance() == rCompare.getSmallestViewDistance()
&& getSmallestSubdivisionViewDistance() == rCompare.getSmallestSubdivisionViewDistance()
&& getSubdivisionsX() == rCompare.getSubdivisionsX()
&& getSubdivisionsY() == rCompare.getSubdivisionsY()
&& getBColor() == rCompare.getBColor());
}
return false;
}
basegfx::B2DRange GridPrimitive2D::getB2DRange(const geometry::ViewInformation2D& rViewInformation) const
{
// get object's range
basegfx::B2DRange aUnitRange(0.0, 0.0, 1.0, 1.0);
aUnitRange.transform(getTransform());
// intersect with visible part
aUnitRange.intersect(rViewInformation.getViewport());
return aUnitRange;
}
Primitive2DSequence GridPrimitive2D::get2DDecomposition(const geometry::ViewInformation2D& rViewInformation) const
{
::osl::MutexGuard aGuard( m_aMutex );
if(getLocalDecomposition().hasElements())
{
if(maLastViewport != rViewInformation.getViewport() || maLastViewTransformation != rViewInformation.getViewTransformation())
{
// conditions of last local decomposition have changed, delete
const_cast< GridPrimitive2D* >(this)->setLocalDecomposition(Primitive2DSequence());
}
}
if(!getLocalDecomposition().hasElements())
{
// remember ViewRange and ViewTransformation
const_cast< GridPrimitive2D* >(this)->maLastViewTransformation = rViewInformation.getViewTransformation();
const_cast< GridPrimitive2D* >(this)->maLastViewport = rViewInformation.getViewport();
}
// use parent implementation
return BasePrimitive2D::get2DDecomposition(rViewInformation);
}
// provide unique ID
ImplPrimitrive2DIDBlock(GridPrimitive2D, PRIMITIVE2D_ID_GRIDPRIMITIVE2D)
} // end of namespace primitive2d
} // end of namespace drawinglayer
//////////////////////////////////////////////////////////////////////////////
// eof
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